A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5895-01-606-9892
NSN 5835-01-537-1228
NSN 6105-01-026-0165
NSN 5985-00-112-4170
NSN 6320-00-593-0379
NSN 5975-01-388-3413
NSN 5999-01-254-2763
NSN 5905-01-601-8789
NSN 6320-00-382-7825
NSN 5999-01-104-3773
NSN 5920-01-259-3408
NSN 6135-01-027-7543